1 #include <u.h>
2 #include <libc.h>
3 #include <bio.h>
4 #include "dict.h"
5
6 /*
7 * Use this to start making an index for a new dictionary.
8 * Get the dictionary-specific nextoff and printentry(_,'h')
9 * commands working, add a record to the dicts[] array below,
10 * and run this program to get a list of offset,headword
11 * pairs
12 */
13 Biobuf boutbuf;
14 Biobuf *bdict;
15 Biobuf *bout = &boutbuf;
16 int linelen;
17 int breaklen = 2000;
18 int outinhibit;
19 int debug;
20
21 Dict *dict; /* current dictionary */
22
23 Entry getentry(long);
24
25 void
main(int argc,char ** argv)26 main(int argc, char **argv)
27 {
28 int i;
29 long a, ae;
30 char *p;
31 Entry e;
32
33 Binit(&boutbuf, 1, OWRITE);
34 dict = &dicts[0];
35 ARGBEGIN {
36 case 'd':
37 p = ARGF();
38 dict = 0;
39 if(p) {
40 for(i=0; dicts[i].name; i++)
41 if(strcmp(p, dicts[i].name)==0) {
42 dict = &dicts[i];
43 break;
44 }
45 }
46 if(!dict) {
47 err("unknown dictionary: %s", p);
48 exits("nodict");
49 }
50 break;
51 case 'D':
52 debug++;
53 break;
54 ARGEND }
55 USED(argc,argv);
56 bdict = Bopen(dict->path, OREAD);
57 ae = Bseek(bdict, 0, 2);
58 if(!bdict) {
59 err("can't open dictionary %s", dict->path);
60 exits("nodict");
61 }
62 for(a = 0; a < ae; a = (*dict->nextoff)(a+1)) {
63 linelen = 0;
64 e = getentry(a);
65 Bprint(bout, "%ld\t", a);
66 linelen = 4; /* only has to be approx right */
67 (*dict->printentry)(e, 'h');
68 }
69 exits(0);
70 }
71
72 Entry
getentry(long b)73 getentry(long b)
74 {
75 long e, n, dtop;
76 static Entry ans;
77 static int anslen = 0;
78
79 e = (*dict->nextoff)(b+1);
80 ans.doff = b;
81 if(e < 0) {
82 dtop = Bseek(bdict, 0L, 2);
83 if(b < dtop) {
84 e = dtop;
85 } else {
86 err("couldn't seek to entry");
87 ans.start = 0;
88 ans.end = 0;
89 }
90 }
91 n = e-b;
92 if(n) {
93 if(n > anslen) {
94 ans.start = realloc(ans.start, n);
95 if(!ans.start) {
96 err("out of memory");
97 exits("nomem");
98 }
99 anslen = n;
100 }
101 Bseek(bdict, b, 0);
102 n = Bread(bdict, ans.start, n);
103 ans.end = ans.start + n;
104 }
105 return ans;
106 }
107